In Jain temple practice, the garbhagriha (sanctum) is the most sacred part of the temple, housing the Tirthankar’s idol. The space directly above or over the sanctum is not normally used for daily activities.

Key points:

• The sanctum is kept holy and is typically covered by a structural superstructure (shikhara/vimāna) that rises above it. This top is sacred, not a place for daily use.
• Daily use functions (prayer halls, classrooms, kitchens, resting areas, offices) are usually placed in adjacent mandapas, multipurpose halls, or separate precincts, not directly above the sanctum.
• Some temples have a separate upper floor or gallery for certain ritual displays or service areas, but these are designed to avoid disturbing or overshadowing the sanctum.
• There are architectural and ritual guidelines (which can vary between Digambara and Śvetāmbara traditions) about not intruding on the sacred core of the garbhagriha and about preserving the sanctity of the idol and its seat.
• If there is a specific temple or project, consult a qualified temple architect and the competent Jain authorities (acharya or advisory committee) to ensure adherence to tradition and safety.

If you share more details about the context (which temple, what kind of daily use you have in mind, whether you mean a balcony, a hall, or living space), I can give a more tailored explanation within Jain-approved guidelines.